ME345_Lecture_09

# ME345_Lecture_09 - deviation and its confidence interval to...

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M E 345 Spring 2008 Professor John M. Cimbala Lecture 09 02/04/2008 Today, we will : Review the pdf module: Outliers Do some example problems – outliers Example Given : Eleven measurements of turbine efficiency are taken (listed in increasing order below): 58, 72, 74, 74, 76, 77, 80, 80, 82, 85, and 92% ( a ) To do : Are there any “official” outliers? If so, remove them. How many “good” measurements are left? ( b ) To do : Based on the measurements that are left, estimate the population mean and its confidence interval to 95% confidence. ( c ) To do : Based on the measurements that are left, estimate the population standard

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Unformatted text preview: deviation and its confidence interval to 95% confidence. Solution : Example Given : Twenty data points of ( x , y ) pairs are measured (see Excel spreadsheet on website for the data). Data point x y 1 0 3.7 2 0.1 4.2 3 0.2 5.1 4 0.3 6.6 5 0.4 7.4 6 0.5 8.9 7 0.6 10.4 8 0.7 10.9 9 0.8 11.9 10 0.9 11.5 11 1 12.2 12 1.1 14.7 13 1.2 15.3 14 1.3 16.8 15 1.4 17.2 16 1.5 5.6 17 1.6 19.5 18 1.7 4.5 19 1.8 21.3 20 1.9 22.5 To do : Eliminate any official outliers, one at a time. Solution : I will do the solution live in Excel....
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## This note was uploaded on 07/23/2008 for the course ME 345 taught by Professor Staff during the Spring '08 term at Pennsylvania State University, University Park.

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ME345_Lecture_09 - deviation and its confidence interval to...

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